{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "from requests_html import HTMLSession"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "# A-1   单一页面\n",
    "url = \"https://www.liepin.com/zhaopin/?key=新媒体运营\"\n",
    "session = HTMLSession()\n",
    "r = session.get( url )\n",
    "\n",
    "# 先取特定元素, 精准打击其子后辈\n",
    "主要元素 = r.html.xpath( \\\n",
    "    '//ul[@class=\"sojob-list\"]/li')\n",
    "\n",
    "# 预期是一个元素的列表？\n",
    "#print (主要元素[0].xpath('//div[contains(@class,\"sojob-item-main\")]'))\n",
    "#print (主要元素[0].xpath('//div[contains(@class,\"job-info\")]/h3/a'))\n",
    "#print (主要元素[3].xpath('//div[contains(@class,\"job-info\")]/p/a'))\n",
    "#print (主要元素[3].xpath('//div[contains(@class,\"job-info\")]/p/span[@class=\"text-warning\"]'))\n",
    "#print (主要元素[3].xpath('//div[contains(@class,\"job-info\")]/p/span[@class=\"edu\"]/following-sibling::span'))\n",
    "#print (主要元素[3].xpath('//div[contains(@class,\"job-info\")]/p/time/@title'))\n",
    "#print (主要元素[0].xpath('//div[contains(@class,\"sojob-item-main\")]//p[@class=\"company-name\"]/a'))\n",
    "\n",
    "# 作为xpath字典，键为我要抓的牛肉名称，值为xpath\n",
    "dict_xpaths={ \n",
    "    'text': {\n",
    "        'edu':      '//div[contains(@class,\"job-info\")]/p/span[@class=\"edu\"]',\n",
    "        '经验':      '//div[contains(@class,\"job-info\")]/p/span[@class=\"edu\"]/following-sibling::span',\n",
    "        '薪水':    '//div[contains(@class,\"job-info\")]/p/span[@class=\"text-warning\"]', \n",
    "        '时间':    '//div[contains(@class,\"job-info\")]/p/time/@title', \n",
    "        '职称':    '//div[contains(@class,\"job-info\")]/h3/a', \n",
    "        '公司地点': '//div[contains(@class,\"job-info\")]/p/a',\n",
    "        '公司名称': '//div[contains(@class,\"sojob-item-main\")]//p[@class=\"company-name\"]/a', \n",
    "    },\n",
    "    'text_content': {\n",
    "    },\n",
    "    'href': {\n",
    "        '链结':    '//div[contains(@class,\"job-info\")]/h3/a', \n",
    "        '公司URL': '//div[contains(@class,\"sojob-item-main\")]//p[@class=\"company-name\"]/a', \n",
    "    }\n",
    "}\n",
    "\n",
    "def get_e_text_content(_xpath_):\n",
    "    # 高级列表推导\n",
    "    暂存结果 = [e.xpath(_xpath_)[0].lxml.text_content() for e in 主要元素]\n",
    "    return(暂存结果)\n",
    "\n",
    "def get_e_text(_xpath_):\n",
    "    # 高级列表推导\n",
    "    暂存结果 = [\"\".join([x.strip() if type(x) is str else x.text.strip() for x in e.xpath(_xpath_)]) for e in 主要元素]\n",
    "    return(暂存结果)\n",
    "\n",
    "def get_e_href(_xpath_):\n",
    "    # 高级列表推导\n",
    "    暂存结果 = [list(e.xpath(_xpath_, first=True).absolute_links)[0] \\\n",
    "               if len(e.xpath(_xpath_, first=True).absolute_links) >= 1  \\\n",
    "               else \"\" for e in 主要元素]\n",
    "    return(暂存结果)\n",
    "\n",
    "# 只对主要元素下进行.xpath取值\n",
    "数据字典 = dict()\n",
    "\n",
    "数据字典 = {k:get_e_text_content(v) for k,v in dict_xpaths['text_content'].items()}\n",
    "数据字典.update({k:get_e_text(v) for k,v in dict_xpaths['text'].items()})\n",
    "数据字典.update({k:get_e_href(v) for k,v in dict_xpaths['href'].items()})\n",
    "\n",
    "[len(v) for k,v in 数据字典.items()]\n",
    "\n",
    "数据 = pd.DataFrame(数据字典)\n",
    "#数据.to_excel(\"20春_Web数据挖掘_week03_liepin.xlsx\", sheet_name=\"搜查结果\")\n",
    "数据 \n",
    "数据.to_excel(\"单页.xlsx\",\\\n",
    "                sheet_name=\"新媒体运营\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "# 单一页面\n",
    "url = \"https://www.liepin.com/zhaopin/?key=新媒体运营\"\n",
    "session = HTMLSession()\n",
    "r = session.get( url )"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[<Element 'a' href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1'>, <Element 'a' href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=2'>, <Element 'a' href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=3'>, <Element 'a' href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=4'>, <Element 'a' href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1'>, <Element 'a' class=('last',) href='/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=9' title='末页'>]\n",
      "{'2': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1', '3': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=2', '4': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=3', '5': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=4', '下一页': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1', '': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=9'}\n"
     ]
    }
   ],
   "source": [
    "# xpath 解析翻页a/@href\n",
    "xpath_翻页a = '//div[@class=\"pagerbar\"]/a' # 有disabled, current等href是javascript\n",
    "xpath_翻页a = '//div[@class=\"pagerbar\"]/a[starts-with(@href,\"/zhaopin\")]'\n",
    "print (r.html.xpath(xpath_翻页a)) # 物件\n",
    "\n",
    "href_列表 = [x.xpath('//@href')[0] for x in r.html.xpath(xpath_翻页a)]\n",
    "#print (href_列表)\n",
    "\n",
    "文字_列表 = [x.text for x in r.html.xpath(xpath_翻页a)]\n",
    "#print (文字_列表)\n",
    "\n",
    "href_字典 = {x.text:x.xpath('//@href')[0]  for x in r.html.xpath(xpath_翻页a)}\n",
    "print (href_字典)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "        vertical-align: middle;\n",
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       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>scheme</th>\n",
       "      <th>netloc</th>\n",
       "      <th>path</th>\n",
       "      <th>params</th>\n",
       "      <th>query</th>\n",
       "      <th>fragment</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td></td>\n",
       "      <td></td>\n",
       "      <td>/zhaopin/</td>\n",
       "      <td></td>\n",
       "      <td>compkind=&amp;dqs=&amp;pubTime=&amp;pageSize=40&amp;salary=&amp;co...</td>\n",
       "      <td></td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "  scheme netloc       path params  \\\n",
       "0                /zhaopin/          \n",
       "1                /zhaopin/          \n",
       "2                /zhaopin/          \n",
       "3                /zhaopin/          \n",
       "4                /zhaopin/          \n",
       "5                /zhaopin/          \n",
       "\n",
       "                                               query fragment  \n",
       "0  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           \n",
       "1  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           \n",
       "2  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           \n",
       "3  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           \n",
       "4  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           \n",
       "5  compkind=&dqs=&pubTime=&pageSize=40&salary=&co...           "
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "scheme      1\n",
      "netloc      1\n",
      "path        1\n",
      "params      1\n",
      "query       5\n",
      "fragment    1\n",
      "dtype: int64\n"
     ]
    },
    {
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       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>pageSize</th>\n",
       "      <th>sortFlag</th>\n",
       "      <th>key</th>\n",
       "      <th>siTag</th>\n",
       "      <th>d_sfrom</th>\n",
       "      <th>d_ckId</th>\n",
       "      <th>d_curPage</th>\n",
       "      <th>d_pageSize</th>\n",
       "      <th>d_headId</th>\n",
       "      <th>curPage</th>\n",
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       "  <tbody>\n",
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       "      <th>0</th>\n",
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       "      <td>2</td>\n",
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       "      <td>40</td>\n",
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       "      <td>40</td>\n",
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       "      <td>3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>40</td>\n",
       "      <td>°radeFlag=0</td>\n",
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       "      <td>search_unknown</td>\n",
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       "      <td>0</td>\n",
       "      <td>40</td>\n",
       "      <td>62e86de1874b8b6793412fef961524f8</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>40</td>\n",
       "      <td>°radeFlag=0</td>\n",
       "      <td>新媒体运营</td>\n",
       "      <td>qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw</td>\n",
       "      <td>search_unknown</td>\n",
       "      <td>62e86de1874b8b6793412fef961524f8</td>\n",
       "      <td>0</td>\n",
       "      <td>40</td>\n",
       "      <td>62e86de1874b8b6793412fef961524f8</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>40</td>\n",
       "      <td>°radeFlag=0</td>\n",
       "      <td>新媒体运营</td>\n",
       "      <td>qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw</td>\n",
       "      <td>search_unknown</td>\n",
       "      <td>62e86de1874b8b6793412fef961524f8</td>\n",
       "      <td>0</td>\n",
       "      <td>40</td>\n",
       "      <td>62e86de1874b8b6793412fef961524f8</td>\n",
       "      <td>9</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "  pageSize     sortFlag    key                                          siTag  \\\n",
       "0       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "1       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "2       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "3       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "4       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "5       40  °radeFlag=0  新媒体运营  qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw   \n",
       "\n",
       "          d_sfrom                            d_ckId d_curPage d_pageSize  \\\n",
       "0  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "1  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "2  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "3  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "4  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "5  search_unknown  62e86de1874b8b6793412fef961524f8         0         40   \n",
       "\n",
       "                           d_headId curPage  \n",
       "0  62e86de1874b8b6793412fef961524f8       1  \n",
       "1  62e86de1874b8b6793412fef961524f8       2  \n",
       "2  62e86de1874b8b6793412fef961524f8       3  \n",
       "3  62e86de1874b8b6793412fef961524f8       4  \n",
       "4  62e86de1874b8b6793412fef961524f8       1  \n",
       "5  62e86de1874b8b6793412fef961524f8       9  "
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "pageSize      1\n",
      "sortFlag      1\n",
      "key           1\n",
      "siTag         1\n",
      "d_sfrom       1\n",
      "d_ckId        1\n",
      "d_curPage     1\n",
      "d_pageSize    1\n",
      "d_headId      1\n",
      "curPage       5\n",
      "dtype: int64\n"
     ]
    }
   ],
   "source": [
    "# 建构参数模板：找到关键参数及参数结构\n",
    "from urllib.parse import urlparse, parse_qs\n",
    "import pandas as pd\n",
    "from IPython.display import display, HTML\n",
    "\n",
    "# 总体目标：输入 href_列表, 建构出参数字典\n",
    "\n",
    "# urlparse 解析后丢入数据框\n",
    "df = pd.DataFrame([ urlparse(x) for x in href_列表])\n",
    "df_qs = pd.DataFrame([{k:v[0] for k,v in parse_qs(x).items()} for x in df['query'] ])\n",
    "\n",
    "display(df)\n",
    "print(df.nunique())\n",
    "display(df_qs)\n",
    "print(df_qs.nunique())\n",
    "\n",
    "df_qs.curPage\n",
    "df_qs = df_qs.assign (curPage_int=df_qs.curPage.astype(int)) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'pageSize': ['40'], 'sortFlag': ['°radeFlag=0'], 'key': ['新媒体运营'], 'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'], 'd_sfrom': ['search_unknown'], 'd_ckId': ['62e86de1874b8b6793412fef961524f8'], 'd_curPage': ['0'], 'd_pageSize': ['40'], 'd_headId': ['62e86de1874b8b6793412fef961524f8'], 'curPage': ['1']}\n",
      "{'2': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1', '3': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=2', '4': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=3', '5': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=4', '下一页': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=1', '': '/zhaopin/?compkind=&dqs=&pubTime=&pageSize=40&salary=&compTag=&sortFlag=°radeFlag=0&compIds=&subIndustry=&jobKind=&industries=&compscale=&key=%E6%96%B0%E5%AA%92%E4%BD%93%E8%BF%90%E8%90%A5&siTag=qkuPMtyyPWyGJLVm3Ykn1A%7EfA9rXquZc5IkJpXC-Ycixw&d_sfrom=search_unknown&d_ckId=62e86de1874b8b6793412fef961524f8&d_curPage=0&d_pageSize=40&d_headId=62e86de1874b8b6793412fef961524f8&curPage=9'}\n"
     ]
    }
   ],
   "source": [
    "# 建构参数模板：找到关键参数及参数结构\n",
    "\n",
    "def parse_url_qs_for_curPage (url):\n",
    "    six_parts = urlparse(url) \n",
    "    out = parse_qs(six_parts.query)\n",
    "    return (out)\n",
    "\n",
    "# 取一例做模板\n",
    "参数模板 = parse_url_qs_for_curPage(href_列表[0])\n",
    "print (参数模板)\n",
    "\n",
    "print (href_字典)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "9\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "{0: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [0],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 1: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [1],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 2: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [2],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 3: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [3],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 4: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [4],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 5: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [5],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 6: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [6],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 7: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [7],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 8: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [8],\n",
       "  'keyword': ['新媒体运营']},\n",
       " 9: {'pageSize': ['40'],\n",
       "  'sortFlag': ['°radeFlag=0'],\n",
       "  'key': ['新媒体运营'],\n",
       "  'siTag': ['qkuPMtyyPWyGJLVm3Ykn1A~fA9rXquZc5IkJpXC-Ycixw'],\n",
       "  'd_sfrom': ['search_unknown'],\n",
       "  'd_ckId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'd_curPage': ['0'],\n",
       "  'd_pageSize': ['40'],\n",
       "  'd_headId': ['62e86de1874b8b6793412fef961524f8'],\n",
       "  'curPage': [9],\n",
       "  'keyword': ['新媒体运营']}}"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# 建构参数模板生成器：keyword curPage\n",
    "def 参数模板生成(keyword, curPage):\n",
    "    参数 = 参数模板.copy()\n",
    "    参数['curPage'] = curPage\n",
    "    参数['keyword'] = keyword\n",
    "    return (参数)\n",
    "\n",
    "参数_keyword_新媒体运营_curPage = { \n",
    "    i:参数模板生成(curPage = [i], \\\n",
    "                  keyword = ['新媒体运营']) \\\n",
    "    for i,v in href_字典.items()\\\n",
    "    }\n",
    "\n",
    "# print(参数_keyword_用户体验_curPage) # 只生成本页有的额外翻页URL, 并没有推估到&curPage=9,也没有这页\n",
    "\n",
    "print (df_qs.curPage_int.min()) # 最小值只有1\n",
    "print (df_qs.curPage_int.max()) # 最大值只有9\n",
    "\n",
    "# 应该是 0 (本页)....9(最大值)\n",
    "\n",
    "参数_keyword_新媒体运营_curPage = { \n",
    "    i:参数模板生成(curPage = [i], \\\n",
    "                  keyword = ['新媒体运营']) \\\n",
    "    for i in range(0,df_qs.curPage_int.max()+1)\\\n",
    "    }\n",
    "参数_keyword_新媒体运营_curPage"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [],
   "source": [
    "# requests_liepin\n",
    "session = HTMLSession()\n",
    "\n",
    "def requests_liepin( url, params):\n",
    "    r = session.get( url , params = payload)\n",
    "\n",
    "    # 先取特定元素, 精准打击其子后辈\n",
    "    主要元素 = r.html.xpath( '//ul[@class=\"sojob-list\"]/li')\n",
    "\n",
    "    # 作为xpath字典，键为我要抓的牛肉名称，值为xpath\n",
    "    dict_xpaths={ \n",
    "        'text': {\n",
    "            'edu':      '//div[contains(@class,\"job-info\")]/p/span[@class=\"edu\"]',\n",
    "            '经验':      '//div[contains(@class,\"job-info\")]/p/span[@class=\"edu\"]/following-sibling::span',\n",
    "            '薪水':    '//div[contains(@class,\"job-info\")]/p/span[@class=\"text-warning\"]', \n",
    "            '时间':    '//div[contains(@class,\"job-info\")]/p/time/@title', \n",
    "            '职称':    '//div[contains(@class,\"job-info\")]/h3/a', \n",
    "            '公司地点': '//div[contains(@class,\"job-info\")]/p/a',\n",
    "            '公司名称': '//div[contains(@class,\"sojob-item-main\")]//p[@class=\"company-name\"]/a', \n",
    "        },\n",
    "        'text_content': {\n",
    "        },\n",
    "        'href': {\n",
    "            '链结':    '//div[contains(@class,\"job-info\")]/h3/a', \n",
    "            '公司URL': '//div[contains(@class,\"sojob-item-main\")]//p[@class=\"company-name\"]/a', \n",
    "        }\n",
    "    }\n",
    "\n",
    "    def get_e_text_content(_xpath_):\n",
    "        # 高级列表推导\n",
    "        暂存结果 = [e.xpath(_xpath_)[0].lxml.text_content() for e in 主要元素]\n",
    "        return(暂存结果)\n",
    "\n",
    "    def get_e_text(_xpath_):\n",
    "        # 高级列表推导\n",
    "        暂存结果 = [\"\".join([x.strip() if type(x) is str else x.text.strip() for x in e.xpath(_xpath_)]) for e in 主要元素]\n",
    "        return(暂存结果)\n",
    "\n",
    "    def get_e_href(_xpath_):\n",
    "        # 高级列表推导\n",
    "        暂存结果 = [list(e.xpath(_xpath_, first=True).absolute_links)[0] \\\n",
    "                   if len(e.xpath(_xpath_, first=True).absolute_links) >= 1  \\\n",
    "                   else \"\" for e in 主要元素]\n",
    "        return(暂存结果)\n",
    "\n",
    "    # 只对主要元素下进行.xpath取值\n",
    "    数据字典 = dict()\n",
    "\n",
    "    数据字典 = {k:get_e_text_content(v) for k,v in dict_xpaths['text_content'].items()}\n",
    "    数据字典.update({k:get_e_text(v) for k,v in dict_xpaths['text'].items()})\n",
    "    数据字典.update({k:get_e_href(v) for k,v in dict_xpaths['href'].items()})\n",
    "\n",
    "    数据 = pd.DataFrame(数据字典)\n",
    "    #数据.to_excel(\"20春_Web数据挖掘_week03_liepin.xlsx\", sheet_name=\"搜查结果\")\n",
    "    return (数据)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Wall time: 57.4 s\n"
     ]
    }
   ],
   "source": [
    "%%time\n",
    "\n",
    "import time\n",
    "from random import random\n",
    "\n",
    "url = \"https://www.liepin.com/zhaopin/\"\n",
    "\n",
    "list_df = list()\n",
    "for k,v in 参数_keyword_新媒体运营_curPage.items():\n",
    "    payload = v\n",
    "    df = requests_liepin( url, params = payload)\n",
    "    time.sleep(3+4*random())  #放慢脚步 3-7秒, 平均约5秒\n",
    "    df = df.assign (curPage = k)  # 区分  curPage\n",
    "    list_df.append(df)\n",
    "\n",
    "df_all = pd.concat(list_df).reset_index()\n",
    "df_all.index.name = '序'\n",
    "\n",
    "# 上周C-4   输出\n",
    "df_all.to_excel(\"翻页.xlsx\",\\\n",
    "                sheet_name=\"新媒体运营\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "新媒体运营 10\n",
      "产品经理 10\n",
      "Wall time: 1min 44s\n"
     ]
    }
   ],
   "source": [
    "%%time\n",
    "# B-3 多个页面+多个关键词\n",
    "import time\n",
    "from random import random\n",
    "\n",
    "url = \"https://www.liepin.com/zhaopin/\"\n",
    "xpath_翻页a = '//div[@class=\"pagerbar\"]/a[starts-with(@href,\"/zhaopin\")]'\n",
    "\n",
    "keywords = ['新媒体运营','产品经理']\n",
    "list_df = list()\n",
    "\n",
    "## 第一页试探有多长的页面\n",
    "for key in keywords:\n",
    "    payload = 参数模板生成(keyword=[key], curPage=['0'])\n",
    "    df = requests_liepin( url, params = payload)\n",
    "    href_列表 = [x.xpath('//@href')[0] for x in r.html.xpath(xpath_翻页a)]\n",
    "    df = pd.DataFrame([ urlparse(x) for x in href_列表])\n",
    "    df_qs = pd.DataFrame([{k:v[0] for k,v in parse_qs(x).items()} for x in df['query'] ])\n",
    "    df_qs = df_qs.assign (curPage_int=df_qs.curPage.astype(int)) # 变成整数\n",
    "    长度 = df_qs.curPage_int.max()+1\n",
    "    参数_keyword_X_curPage = { \n",
    "        i:参数模板生成(curPage = [i], \\\n",
    "                      keyword = [key]) \\\n",
    "        for i in range(0,长度)\\\n",
    "        }\n",
    "    #print (参数_keyword_X_curPage)\n",
    "    print (key,长度)\n",
    "    \n",
    "    for k,v in 参数_keyword_X_curPage.items():\n",
    "        payload = v\n",
    "        df = requests_liepin( url, params = payload)\n",
    "        time.sleep(3+4*random())  #放慢脚步 3-7秒, 平均约5秒\n",
    "        df = df.assign (keyword = key)  # 区分  keyword    \n",
    "        df = df.assign (curPage = k)  # 区分  curPage    \n",
    "        list_df.append(df)\n",
    "        \n",
    "df_all = pd.concat(list_df).reset_index()\n",
    "df_all.index.name = '序'\n",
    "\n",
    "df_all.to_excel(\"翻页.xlsx\",\\\n",
    "                sheet_name=\"_\".join(keywords))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
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